Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Deep silt stratum foundation pit excavation method
The invention discloses a deep silt stratum foundation pit excavation method. The method comprises the steps of construction preparation, dewatering and drainage construction, foundation pit supporting pile construction, foundation pit excavation and slope supporting in a foundation pit. According to the deep silt stratum foundation pit excavation method, the foundation pit excavation operation adopts a drainage and airing mode to improve the bearing capacity of the foundation, and has the characteristics of high efficiency and low cost; meanwhile, a layered sloping stepped long-arm excavation method is adopted, operation is easy, construction is easy, convenient and rapid, the technological process is clear, and the construction period is shortened; a long-arm excavator is adopted for excavation and soil loading, so that the influence of construction load on the stability of a temporary slope of the foundation pit and the deflection of a tubular pile foundation can be avoided, and the excavation quality is ensured; and a silt layer with high local flow plasticity is pre-consolidated by adopting lime piles so that moisture in silt can be quickly reduced, the bearing capacity of the silt is improved, and the purpose of consolidating silt soil is achieved.
本发明公开了一种深厚淤泥地层基坑开挖方法，包括施工准备、降排水施工、基坑支护桩施工、基坑开挖、基坑内边坡支护。本发明基坑开挖作业采用排水加晾晒的方式提高地基承载力，具有效率高、成本低的特点；同时采用分层放坡阶梯式长臂开挖方法，操作简单、施工简便快捷、工艺流程清晰，缩短了施工工期；采用长臂挖机开挖装土，可避免施工荷载对基坑临时边坡稳定性及管桩基础偏斜造成的影响，确保了开挖质量；对局部流塑性较大的淤泥层采用石灰桩进行预固结，可以快速降低淤泥内的水分，提高淤泥承载力，达到固结淤泥土体的目的。
Deep silt stratum foundation pit excavation method
The invention discloses a deep silt stratum foundation pit excavation method. The method comprises the steps of construction preparation, dewatering and drainage construction, foundation pit supporting pile construction, foundation pit excavation and slope supporting in a foundation pit. According to the deep silt stratum foundation pit excavation method, the foundation pit excavation operation adopts a drainage and airing mode to improve the bearing capacity of the foundation, and has the characteristics of high efficiency and low cost; meanwhile, a layered sloping stepped long-arm excavation method is adopted, operation is easy, construction is easy, convenient and rapid, the technological process is clear, and the construction period is shortened; a long-arm excavator is adopted for excavation and soil loading, so that the influence of construction load on the stability of a temporary slope of the foundation pit and the deflection of a tubular pile foundation can be avoided, and the excavation quality is ensured; and a silt layer with high local flow plasticity is pre-consolidated by adopting lime piles so that moisture in silt can be quickly reduced, the bearing capacity of the silt is improved, and the purpose of consolidating silt soil is achieved.
本发明公开了一种深厚淤泥地层基坑开挖方法，包括施工准备、降排水施工、基坑支护桩施工、基坑开挖、基坑内边坡支护。本发明基坑开挖作业采用排水加晾晒的方式提高地基承载力，具有效率高、成本低的特点；同时采用分层放坡阶梯式长臂开挖方法，操作简单、施工简便快捷、工艺流程清晰，缩短了施工工期；采用长臂挖机开挖装土，可避免施工荷载对基坑临时边坡稳定性及管桩基础偏斜造成的影响，确保了开挖质量；对局部流塑性较大的淤泥层采用石灰桩进行预固结，可以快速降低淤泥内的水分，提高淤泥承载力，达到固结淤泥土体的目的。
Deep silt stratum foundation pit excavation method
一种深厚淤泥地层基坑开挖方法
ZHANG GUANGHUI (Autor:in) / ZHU HAOYU (Autor:in) / FAN JINBIAO (Autor:in) / LI MINGFA (Autor:in) / WANG CHENG (Autor:in)
23.04.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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